2 * Copyright 2004-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 #include "internal/cryptlib.h"
11 #include <openssl/x509.h>
12 #include <openssl/x509v3.h>
13 #include "internal/x509_int.h"
17 static int policy_data_cmp(const X509_POLICY_DATA *const *a,
18 const X509_POLICY_DATA *const *b);
19 static int policy_cache_set_int(long *out, ASN1_INTEGER *value);
22 * Set cache entry according to CertificatePolicies extension. Note: this
23 * destroys the passed CERTIFICATEPOLICIES structure.
26 static int policy_cache_create(X509 *x,
27 CERTIFICATEPOLICIES *policies, int crit)
31 X509_POLICY_CACHE *cache = x->policy_cache;
32 X509_POLICY_DATA *data = NULL;
34 if (sk_POLICYINFO_num(policies) == 0)
36 cache->data = sk_X509_POLICY_DATA_new(policy_data_cmp);
37 if (cache->data == NULL)
39 for (i = 0; i < sk_POLICYINFO_num(policies); i++) {
40 policy = sk_POLICYINFO_value(policies, i);
41 data = policy_data_new(policy, NULL, crit);
45 * Duplicate policy OIDs are illegal: reject if matches found.
47 if (OBJ_obj2nid(data->valid_policy) == NID_any_policy) {
48 if (cache->anyPolicy) {
52 cache->anyPolicy = data;
53 } else if (sk_X509_POLICY_DATA_find(cache->data, data) != -1) {
56 } else if (!sk_X509_POLICY_DATA_push(cache->data, data))
63 x->ex_flags |= EXFLAG_INVALID_POLICY;
64 policy_data_free(data);
65 sk_POLICYINFO_pop_free(policies, POLICYINFO_free);
67 sk_X509_POLICY_DATA_pop_free(cache->data, policy_data_free);
73 static int policy_cache_new(X509 *x)
75 X509_POLICY_CACHE *cache;
76 ASN1_INTEGER *ext_any = NULL;
77 POLICY_CONSTRAINTS *ext_pcons = NULL;
78 CERTIFICATEPOLICIES *ext_cpols = NULL;
79 POLICY_MAPPINGS *ext_pmaps = NULL;
82 if (x->policy_cache != NULL)
84 cache = OPENSSL_malloc(sizeof(*cache));
87 cache->anyPolicy = NULL;
90 cache->explicit_skip = -1;
93 x->policy_cache = cache;
96 * Handle requireExplicitPolicy *first*. Need to process this even if we
97 * don't have any policies.
99 ext_pcons = X509_get_ext_d2i(x, NID_policy_constraints, &i, NULL);
105 if (!ext_pcons->requireExplicitPolicy
106 && !ext_pcons->inhibitPolicyMapping)
108 if (!policy_cache_set_int(&cache->explicit_skip,
109 ext_pcons->requireExplicitPolicy))
111 if (!policy_cache_set_int(&cache->map_skip,
112 ext_pcons->inhibitPolicyMapping))
116 /* Process CertificatePolicies */
118 ext_cpols = X509_get_ext_d2i(x, NID_certificate_policies, &i, NULL);
120 * If no CertificatePolicies extension or problem decoding then there is
121 * no point continuing because the valid policies will be NULL.
124 /* If not absent some problem with extension */
130 i = policy_cache_create(x, ext_cpols, i);
132 /* NB: ext_cpols freed by policy_cache_set_policies */
137 ext_pmaps = X509_get_ext_d2i(x, NID_policy_mappings, &i, NULL);
140 /* If not absent some problem with extension */
144 i = policy_cache_set_mapping(x, ext_pmaps);
149 ext_any = X509_get_ext_d2i(x, NID_inhibit_any_policy, &i, NULL);
154 } else if (!policy_cache_set_int(&cache->any_skip, ext_any))
159 x->ex_flags |= EXFLAG_INVALID_POLICY;
162 POLICY_CONSTRAINTS_free(ext_pcons);
163 ASN1_INTEGER_free(ext_any);
168 void policy_cache_free(X509_POLICY_CACHE *cache)
172 policy_data_free(cache->anyPolicy);
173 sk_X509_POLICY_DATA_pop_free(cache->data, policy_data_free);
177 const X509_POLICY_CACHE *policy_cache_set(X509 *x)
180 if (x->policy_cache == NULL) {
181 CRYPTO_THREAD_write_lock(x->lock);
183 CRYPTO_THREAD_unlock(x->lock);
186 return x->policy_cache;
190 X509_POLICY_DATA *policy_cache_find_data(const X509_POLICY_CACHE *cache,
191 const ASN1_OBJECT *id)
194 X509_POLICY_DATA tmp;
195 tmp.valid_policy = (ASN1_OBJECT *)id;
196 idx = sk_X509_POLICY_DATA_find(cache->data, &tmp);
199 return sk_X509_POLICY_DATA_value(cache->data, idx);
202 static int policy_data_cmp(const X509_POLICY_DATA *const *a,
203 const X509_POLICY_DATA *const *b)
205 return OBJ_cmp((*a)->valid_policy, (*b)->valid_policy);
208 static int policy_cache_set_int(long *out, ASN1_INTEGER *value)
212 if (value->type == V_ASN1_NEG_INTEGER)
214 *out = ASN1_INTEGER_get(value);